Small Horizon dashboard modifications

Hello! I would like to make small modifications on Horizon dashboard (no really the appearance but the dynamic behavior). So far I tried to modify the `network.controller.js` and `ports.controller.js` files, but if I restart the horizon service (`service apache2 restart`) nothing happens, works as before, even If I comment out large chunks of code. I modified the files in the files in the following forlder (`network` and `networkports` subfolders): ``` /usr/share/openstack-dashboard/openstack_dashboard/dashboards/project/static/dashboard/project/workflow/launch-instance/ ``` What do I miss? I also restarted the machine but wont help.